package com.hiwan.system.util;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.sf.json.JSONObject;

/**
 * 微信企业号工具类
 * 
 * @ClassName: WeixinQiYeUtil
 * @Description:
 * @author mjf
 * @date 2017年9月20日
 */
public class HttpUtil {
	private static Logger log = LoggerFactory.getLogger(HttpUtil.class);

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * @param outputStr
	 *            提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpRequest(String requestUrl, String RequestMethod, String output) {
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		try {
			// 建立连接
			URL url = new URL(requestUrl);
			HttpURLConnection connection = (HttpURLConnection) url.openConnection();
			connection.setDoOutput(true);
			connection.setDoInput(true);
			connection.setUseCaches(false);
			connection.setRequestMethod(RequestMethod);
			if (output != null) {
				OutputStream out = connection.getOutputStream();
				out.write(output.getBytes("UTF-8"));
				out.close();
			}
			// 流处理
			InputStream input = connection.getInputStream();
			InputStreamReader inputReader = new InputStreamReader(input, "UTF-8");
			BufferedReader reader = new BufferedReader(inputReader);
			String line;
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			// 关闭连接、释放资源
			reader.close();
			inputReader.close();
			input.close();
			input = null;
			connection.disconnect();
			jsonObject = JSONObject.fromObject(buffer.toString());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return jsonObject;
	}

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * @param outputStr
	 *            提交的数据
	 * @return String
	 */
	public static String httpRequestDefault(String requestUrl, String RequestMethod, String output) {
		StringBuffer buffer = new StringBuffer();
		try {
			// 建立连接
			URL url = new URL(requestUrl);
			HttpURLConnection connection = (HttpURLConnection) url.openConnection();
			connection.setDoOutput(true);
			connection.setDoInput(true);
			connection.setUseCaches(false);
			connection.setRequestMethod(RequestMethod);
			if (output != null) {
				OutputStream out = connection.getOutputStream();
				out.write(output.getBytes("UTF-8"));
				out.close();
			}
			// 流处理
			InputStream input = connection.getInputStream();
			InputStreamReader inputReader = new InputStreamReader(input, "gbk");
			BufferedReader reader = new BufferedReader(inputReader);
			String line;
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			// 关闭连接、释放资源
			reader.close();
			inputReader.close();
			input.close();
			input = null;
			connection.disconnect();
			return buffer.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * @param outputStr
	 *            提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static byte[] httpRequestimage(String requestUrl, String RequestMethod, String output) {
		byte[] imageByte = null;
		try {
			// 建立连接
			URL url = new URL(requestUrl);
			HttpURLConnection connection = (HttpURLConnection) url.openConnection();
			connection.setDoOutput(true);
			connection.setDoInput(true);
			connection.setUseCaches(false);
			connection.setRequestMethod(RequestMethod);
			if (output != null) {
				OutputStream out = connection.getOutputStream();
				out.write(output.getBytes("UTF-8"));
				out.close();
			}
			// 流处理
			InputStream input = connection.getInputStream();
			ByteArrayOutputStream outStream = new ByteArrayOutputStream();
			byte[] buffer = new byte[1024];
			int len = 0;
			while ((len = input.read(buffer)) != -1) {
				outStream.write(buffer, 0, len);
			}
			// 关闭连接、释放资源
			input.close();
			input = null;
			connection.disconnect();
			imageByte = outStream.toByteArray();

		} catch (Exception e) {
		}
		return imageByte;
	}

	/**
	 * 上传csv文件到服务器
	 * 
	 * @param url
	 * @param content
	 *            文件内容 cvs
	 * @return
	 * @throws Exception
	 */
	public static String sendCVSFile(String url, String content) throws Exception {
		String result = null;

		URL urlObj = new URL(url);

		HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
		con.setRequestMethod("POST"); // 以Post方式提交表单，默认get方式
		con.setDoInput(true);
		con.setDoOutput(true);
		con.setUseCaches(false); // post方式不能使用缓存
		// 设置请求头信息
		con.setRequestProperty("Connection", "Keep-Alive");
		con.setRequestProperty("Charset", "UTF-8");
		// 设置边界
		String BOUNDARY = "----------" + System.currentTimeMillis();
		con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
		// 请求正文信息
		// 第一部分：
		StringBuilder sb = new StringBuilder();
		sb.append("--"); // 必须多两道线
		sb.append(BOUNDARY);
		sb.append("\r\n");
		sb.append("Content-Disposition: form-data;name=\"media\";filename=\"" + "info.csv" + "\"\r\n");
		sb.append("Content-Type:application/octet-stream\r\n\r\n");
		byte[] head = sb.toString().getBytes("utf-8");
		// 获得输出流
		OutputStream out = new DataOutputStream(con.getOutputStream());
		// 输出表头
		out.write(head);
		// 文件正文部分
		// 把文件已流文件的方式 推入到url中
		DataInputStream in = new DataInputStream(new ByteArrayInputStream(content.getBytes()));
		int bytes = 0;
		byte[] bufferOut = new byte[1024];
		while ((bytes = in.read(bufferOut)) != -1) {
			out.write(bufferOut, 0, bytes);
		}
		in.close();
		// 结尾部分
		byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线
		out.write(foot);
		out.flush();
		out.close();
		StringBuffer buffer = new StringBuffer();
		BufferedReader reader = null;
		try {
			// 定义BufferedReader输入流来读取URL的响应
			reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
			String line = null;
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			if (result == null) {
				result = buffer.toString();
			}
		} catch (IOException e) {
			log.error("发送POST请求出现异常！" + e);
			e.printStackTrace();
			throw new IOException("数据读取异常");
		} finally {
			if (reader != null) {
				reader.close();
			}
		}
		return result;
	}

}